Submarine cable laying control method and system suitable for shaking environment

The invention discloses a submarine cable laying control method and system suitable for a shaking environment, and the method comprises the steps: obtaining and storing the water entry angle data of a cable and the pressure data between the cable and a cable outlet end of a cable laying machine, and outputting a first angle value and a first pressure value; acquiring and storing distance data and rotating speed data of upper and lower pinch rollers of each pinch roller group of the cable laying machine, and generating and outputting a second pressure value and a lowering speed value; acquiring and storing ship body inclination angle data, and outputting a second angle value; on the basis of the first angle value and the second angle value, according to the first pressure value, a theoretical tension value borne by the output cable is calculated in combination with a set algorithm; the rotating speed and/or the pressure of each pressing wheel set are/is gradually adjusted according to the theoretical tension v